Rarefied Alkahest

Nothing in this list is craftable in turn, so one Rarefied Alkahest is a single step: 8 units of material drawn from 3 base items, plus 12 crystals.

That bill outweighs 5,254 of the 13,602 recipes tracked here and 1,059 of the 1,591 Alchemist ones, and 9,374 recipes nest deeper.

2 of the 3 raw materials match a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.

Nothing in the data consumes Rarefied Alkahest: it is one of 7 end products among the 7 Alchemist recipes at Lv 72.